Let’s create a Happy Birthday Cake Animation using HTML and CSS! 🎂 This fun project will feature a cute birthday cake with animated candles, making it a perfect addition to any celebration page or greeting card on the web.
We’ll use:
- HTML to structure the cake, candles, and base.
- CSS to style the cake and add animations like flickering flames and bouncy layers.
Whether you’re new to coding or just want to make something festive and fun, this project is a great way to practice animation with CSS while creating something joyful.
Let’s bring the birthday vibes to life with code! 🎉🎈
HTML :
This HTML code creates a birthday cake animation with candles using SVG and CSS. The <div class="candle"> shows animated flames, and the <svg> draws and animates the cake’s shape using multiple <path> elements with <animate> tags that morph the cake over time. It links to external CSS for styling and uses SMIL animation within SVG for smooth transitions, creating a fun visual effect when the cake appears to “rise” or “grow.”
<!DOCTYPE html>
<html lang="en" >
<head>
<meta charset="UTF-8">
<title>Happy birthday cake | @coding.stella</title>
<link rel="stylesheet" href="https://public.codepenassets.com/css/reset-2.0.min.css">
<link rel="stylesheet" href="./style.css">
</head>
<body>
<div class="candle">
<div class="fire"></div>
<div class="fire"></div>
<div class="fire"></div>
<div class="fire"></div>
<div class="fire"></div>
</div>
<svg id="cake" version="1.1" x="0px" y="0px" width="200px" height="500px" viewBox="0 0 200 500" enable-background="new 0 0 200 500" xml:space="preserve">
<path fill="#a88679" d="M173.667-13.94c-49.298,0-102.782,0-147.334,0c-3.999,0-4-16.002,0-16.002
c44.697,0,96.586,0,147.334,0C177.667-29.942,177.668-13.94,173.667-13.94z">
<animate id="bizcocho_3" attributeName="d" calcMode="spline" keySplines="0 0 1 1; 0 0 1 1" begin="relleno_2.end" dur="0.3s" fill="freeze" values="
M173.667-13.94c-49.298,0-102.782,0-147.334,0c-3.999,0-4-16.002,0-16.002
c44.697,0,96.586,0,147.334,0C177.667-29.942,177.668-13.94,173.667-13.94z
;
M173.667,411.567c-47.995,12.408-102.955,12.561-147.334,0
c-3.848-1.089-0.189-16.089,3.661-15.002c44.836,12.66,90.519,12.753,139.427,0.07
C173.293,395.631,177.541,410.566,173.667,411.567z
;
M173.667,427.569c-49.795,0-101.101,0-147.334,0c-3.999,0-4-16.002,0-16.002
c46.385,0,97.539,0,147.334,0C177.668,411.567,177.667,427.569,173.667,427.569z
" />
</path>
<path fill="#8b6a60" d="M100-178.521c1.858,0,3.364,1.506,3.364,3.363c0,0,0,33.17,0,44.227
c0,19.144,0,57.431,0,76.574c0,10.152,0,40.607,0,40.607c0,1.858-1.506,3.364-3.364,3.364l0,0c-1.858,0-3.364-1.506-3.364-3.364c0,0,0-30.455,0-40.607c0-19.144,0-57.432,0-76.575c0-11.057,0-44.226,0-44.226C96.636-177.015,98.142-178.521,100-178.521
L100-178.521z">
<animate id="relleno_2" attributeName="d" calcMode="spline" keySplines="0 0 1 1; 0 0 1 1; 0 0 0.58 1" begin="bizcocho_2.end" dur="0.5s" fill="freeze" values="
M100-178.521c1.858,0,3.364,1.506,3.364,3.363c0,0,0,33.17,0,44.227
c0,19.144,0,57.431,0,76.574c0,10.152,0,40.607,0,40.607c0,1.858-1.506,3.364-3.364,3.364l0,0c-1.858,0-3.364-1.506-3.364-3.364c0,0,0-30.455,0-40.607c0-19.144,0-57.432,0-76.575c0-11.057,0-44.226,0-44.226C96.636-177.015,98.142-178.521,100-178.521
L100-178.521z
;
M100,267.257c1.858,0,3.364,1.506,3.364,3.363c0,0,0,33.17,0,44.227
c0,19.143,0,57.43,0,76.574c0,10.151,0,40.606,0,40.606c0,1.858-1.506,3.364-3.364,3.364l0,0c-1.858,0-3.364-1.506-3.364-3.364
c0,0,0-30.455,0-40.606c0-19.145,0-57.432,0-76.576c0-11.057,0-44.225,0-44.225C96.636,268.763,98.142,267.257,100,267.257
L100,267.257z
;
M93.928,405.433c-0.655,6.444-0.102,9.067,2.957,11.798c0,0,8.083,5.571,16.828,3.503
c18.629-4.406,43.813,6.194,50.792,7.791c14.75,3.375,9.162,6.867,9.162,6.867c-2.412,2.258-58.328,0-73.667,0l0,0
c-1.858,0-69.995,2.133-73.667,0c0,0-3.337-2.439,6.172-5.992c11.375-4.25,52.875,8.822,47.139-9.442
c-6.333-20.167,5.226-21.514,5.226-21.514c3.435-0.915,12.78-6.663,10.923-0.546L93.928,405.433z
;
M102.242,427.569c5.348,0,14.079,0,17.462,0c0,0,17.026,0,27.504,0
c19.143,0,20.39-3.797,26.459,0c3,1.877,0,7.823,0,7.823c-2.412,2.258-58.328,0-73.667,0l0,0c-1.858,0-67.187,0-73.667,0
c0,0-4.125-4.983,0-7.823c5.201-3.58,16.085,0,23.725,0c8.841,0,20.762,0,20.762,0c3.686,0,8.597,0,19.511,0H102.242z
" />
</path>
<path fill="#a88679" d="M173.667-15.929c-46.512,0-105.486,0-147.334,0c-3.999,0-4-16.002,0-16.002
c43.566,0,97.96,0,147.334,0C177.667-31.931,177.666-15.929,173.667-15.929z">
<animate id="bizcocho_2" attributeName="d" calcMode="spline" keySplines="0 0 1 1; 0 0 1 1; 0.25 0 0.58 1" begin="relleno_1.end" dur="0.5s" fill="freeze" values="
M173.667-15.929c-46.512,0-105.486,0-147.334,0c-3.999,0-4-16.002,0-16.002
c43.566,0,97.96,0,147.334,0C177.667-31.931,177.666-15.929,173.667-15.929z
;
M173.434,445.393c-47.269,8.001-105.245,8.001-147.334,0c-3.929-0.747-0.692-16.543,3.243-15.824
c43.828,8.001,92.165,8.001,140.739,0C174.029,428.918,177.377,444.726,173.434,445.393z
;
M173.667,449.514c-47.576-5.454-102.799-5.744-147.333,0c-3.966,0.512-3.938-15.297,0-16.002
c43.683-7.823,97.646-8.026,147.333,0C177.616,434.15,177.642,449.969,173.667,449.514z
;
M173.667,451.394c-49.298,0-102.782,0-147.334,0c-3.999,0-4-16.002,0-16.002
c44.697,0,96.586,0,147.334,0C177.667,435.392,177.668,451.394,173.667,451.394z
" />
</path>
<path fill="#8b6a60" d="M101.368-73.685c0,12.164,0,15.18,0,28.519c0,22.702,0-13.661,0,8.304c0,14.48,0,18.233,0,30.512
c0,1.753-2.958,1.847-2.958,0c0-12.68,0-16.277,0-30.401c0-21.983,0,11.66,0-8.305c0-13.027,0-15.992,0-28.628
C98.411-75.883,101.368-75.592,101.368-73.685z">
<animate id="relleno_1" attributeName="d" calcMode="spline" keySplines="0 0 1 1; 0 0 1 1; 0 0 0.6 1" begin="bizcocho_1.end" dur="0.5s" fill="freeze" values="
M101.368-73.685c0,12.164,0,15.18,0,28.519c0,22.702,0-13.661,0,8.304c0,14.48,0,18.233,0,30.512
c0,1.753-2.958,1.847-2.958,0c0-12.68,0-16.277,0-30.401c0-21.983,0,11.66,0-8.305c0-13.027,0-15.992,0-28.628
C98.411-75.883,101.368-75.592,101.368-73.685z
;
M101.368,350.885c0,12.164,0,65.18,0,78.518c0,22.703,0-33.66,0-11.695c0,14.48,0,28.232,0,40.512
c0,1.753-2.958,1.847-2.958,0c0-12.68,0-26.277,0-40.402c0-21.982,0,31.66,0,11.695c0-13.027,0-65.992,0-78.627
C98.411,348.686,101.368,348.977,101.368,350.885z
;
M128.38,447.567c37.626,6.312,39.303,13.658,26.833,12.833c-22.653-1.499-13.636-0.831-23.302-0.831
c-14.48,0-17.884,0-30.163,0c-2.087,0-2.068,0-3.915,0c-13.333,0-8.963,0-23.088,0c-11.668,0-14.062,5.995-27.532,1.164
c-12.629-4.529,38.667-3.167,46.833-17.333C100.077,432.94,105.546,443.736,128.38,447.567z
;
M173.667,451.394c2.875,0,2.997,9.257,0,9.131c-22.662-0.956-32.09-0.956-41.756-0.956
c-14.48,0-17.884,0-30.163,0c-2.087,0-2.068,0-3.915,0c-13.333,0-8.963,0-23.088,0c-11.668,0-34.99-0.294-48.412,1.831
c-4.109,0.65-3.01-10.006,0-10.006C37.129,451.394,149.379,451.394,173.667,451.394z
" />
</path>
<path fill="#a88679" d="M173.667,21.571c-33.174,0-111.467,0-147.334,0c-4,0-4-16.002,0-16.002c39.836,0,105.982,0,147.334,0
C177.668,5.569,177.667,21.571,173.667,21.571z">
<animate id="bizcocho_1" attributeName="d" calcMode="spline" keySplines="0 0 1 1; 0 0 1 1; 0 0 1 1; 0.25 0 1 1; 0 0 1 1; 0.25 0 0.6 1" begin="2s" dur="0.8s" fill="freeze" values="
M173.667,21.571c-33.174,0-111.467,0-147.334,0c-4,0-4-16.002,0-16.002c39.836,0,105.982,0,147.334,0
C177.668,5.569,177.667,21.571,173.667,21.571z
;
M173.667,459.569c-33.197,16.002-110.782,16.002-147.334,0c-3.664-1.604,1.614-15.617,5.337-14.153
c40.702,16.002,94.289,16.104,136.505,0.103C171.917,444.1,177.271,457.832,173.667,459.569z
;
M171.817,475.571c-39.361-3.001-105.438-2.571-143.556,0c-3.991,0.27-7.377-14.736-3.387-15.014
c41.553-2.888,104.421-3.121,150.51-0.233C179.378,460.574,175.806,475.875,171.817,475.571z
;
M171.817,459.564c-38.8-12.188-104.504-13.762-143.556,0c-3.772,1.329-7.961-12.604-4.178-13.905
c40.864-14.064,105.114-15.52,151.918-0.973C179.822,445.874,175.634,460.762,171.817,459.564z
;
M173.667,475.571c-46.376-5.005-105.924-4.003-147.334,0c-3.981,0.385-3.479-15.421,0.479-16.002
c43.087-6.327,97.705-7.083,146.855,0.438C177.621,460.613,177.644,476,173.667,475.571z
;
M173.667,474.117c-46.376,1.866-105.638,2.01-147.334,0c-3.995-0.192-3.52-16.144,0.479-16.002
c43.794,1.55,96.341,1.541,145.723,0C176.532,457.99,177.663,473.956,173.667,474.117z
;
M173.667,475.571c-46.512,0-105.486,0-147.334,0c-3.999,0-4-16.002,0-16.002c43.566,0,97.96,0,147.334,0
C177.667,459.569,177.666,475.571,173.667,475.571z
" />
</path>
<path fill="#fefae9" d="M104.812,113.216c0,3.119-2.164,5.67-4.812,5.67c-2.646,0-4.812-2.551-4.812-5.67c0-5.594,0-16.782,0-22.375
c0-5.143,0-15.427,0-20.568c0-7.333,0-21.998,0-29.33c0-5.523,0-16.569,0-22.092c0-3.295,0-9.885,0-13.181
C95.188,2.551,97.353,0,100,0c2.648,0,4.812,2.551,4.812,5.669c0,3.248,0,9.743,0,12.991c0,5.428,0,16.284,0,21.711
c0,7.618,0,22.854,0,30.472c0,4.952,0,14.854,0,19.807C104.812,96.292,104.812,107.576,104.812,113.216z">
<animate id="crema" attributeName="d" calcMode="spline" keySplines="0 0 1 1; 0 0 1 1; 0 0 1 1; 0.25 0 1 1; 0 0 1 1; 0 0 0.58 1" begin="bizcocho_3.end" dur="2s" fill="freeze" values="
M104.812,113.216c0,3.119-2.164,5.67-4.812,5.67c-2.646,0-4.812-2.551-4.812-5.67c0-5.594,0-16.782,0-22.375
c0-5.143,0-15.427,0-20.568c0-7.333,0-21.998,0-29.33c0-5.523,0-16.569,0-22.092c0-3.295,0-9.885,0-13.181
C95.188,2.551,97.353,0,100,0c2.648,0,4.812,2.551,4.812,5.669c0,3.248,0,9.743,0,12.991c0,5.428,0,16.284,0,21.711
c0,7.618,0,22.854,0,30.472c0,4.952,0,14.854,0,19.807C104.812,96.292,104.812,107.576,104.812,113.216z
;
M104.812,405.897c0,3.119-2.164,5.67-4.812,5.67c-2.646,0-4.812-2.551-4.812-5.67c0-5.594,0-16.782,0-22.376
c0-5.143,0-15.426,0-20.568c0-7.332,0-21.997,0-29.33c0-5.522,0-16.568,0-22.092c0-3.295,0-9.885,0-13.181
c0-3.118,2.165-5.669,4.812-5.669c2.648,0,4.812,2.551,4.812,5.669c0,3.247,0,9.743,0,12.991c0,5.428,0,16.283,0,21.711
c0,7.618,0,22.854,0,30.473c0,4.951,0,14.854,0,19.807C104.812,388.972,104.812,400.256,104.812,405.897z
;
M111.873,411.567c-3.119,0-9.226,0-11.874,0c-2.646,0-7.748,0-10.867,0c-7.086,0-12.698,0-18.292,0
c-6.592,0-12.871,7.371-19.166,3.008c-10.043-6.961-7.776-10.169,2.991-17.745c12.61-8.873,27.713,1.994,25.919-7.531
c-2.589-13.742,11.008-14.513,11.365-17.789c0.441-4.051,4.235-11.107,8.051-8.175c3.113,2.393,1.007,8.008,0,13.159
c-1.871,9.569,8.058,2.113,9.494,14.155c2.592,21.732,21.184-0.675,29.309,7.976c5.216,5.553,18.413,5.552,15.426,12.942
c-3.131,7.745-15.825-4.369-23.8,2.903C126.261,418.271,118.301,411.567,111.873,411.567z
;
M111.873,411.567c-3.119,0-9.226,0-11.874,0c-2.646,0-9.734,4.069-12.853,4.069
c-7.086,0-10.712-4.069-16.306-4.069c-6.592,0-12.12,6.013-19.166,3.008c-7.053-3.008-7.458,2.026-18.659,1.165
c-6.832-0.525-7.522-3.034-7.533-6.265c-0.037-10.336,22.073-2.452,36.613-2.628c10.234-0.124,19.856-1.439,37.905-2.102
c16.642-0.61,32.699,1.552,46.009,1.927c12.438,0.351,29.663-8.99,31.532,3.315c0.773,5.093-5.605,3.342-11.211,9.579
c-5.093,5.667-7.59-4.605-12.965-3.832c-8.269,1.189-14.962-8.537-22.937-1.265C126.261,418.271,118.301,411.567,111.873,411.567z
;
M110.946,413.652c-2.904-1.137-8.405-2.748-12.446-0.97c-6.099,2.685-7.273,10.358-13.253,8.242
c-7.843-2.775-8.953-5.008-14.546-5.01c-24.653-0.011-4.849,26.507-18.264,26.507c-12.377,0,5.791-33.537-19.422-26.682
c-7.703,2.095-9.806-0.942-9.817-4.173c-0.037-10.336,24.357-4.544,38.897-4.72c10.234-0.124,19.856-1.439,37.905-2.102
c16.642-0.61,32.699,1.552,46.009,1.927c12.438,0.351,28.973-8.865,31.532,3.315c1.449,6.896,0.318,15.624-3.874,15.624
c-7.619,0-1.788-15.192-19.243-7.111c-7.581,3.51-15.963-9.738-26.669,1.066C120.644,426.744,118.381,416.561,110.946,413.652z
;
M111.547,413.9c-2.969-0.956-8.775-0.949-13.167-0.5c-14.667,1.5-8.325,16.508-14.667,16.666
c-6.667,0.166-0.167-13.5-13.013-14.151c-30.471-1.545-5.572,46.651-18.987,46.651c-12.377,0,10.333-50.166-18.667-44.5
c-7.835,1.531-9.537-1.417-9.548-4.647c-0.037-10.336,23.675-5.177,38.215-5.353c10.234-0.124,20.618-1.671,38.667-2.333
c16.642-0.61,32.023,1.458,45.333,1.833c12.438,0.351,33.819-8.431,33.199,4.001c-0.532,10.666,0.414,26.166-5.245,25.833
c-7.606-0.447-2.954-31.5-19.243-18.899c-7.985,6.177-17.658-5.969-27.377,5.732C118.88,434.066,121.38,417.067,111.547,413.9z
;
M111.547,415.233c-6.667-0.834-9.667,4.667-13.833,3.333c-19.649-6.291-8.158,22.176-14.5,22.334
c-6.667,0.166,2.833-18-13.333-22.167c-29.544-7.615-9.667,43.833-20.167,43.833c-10.333,0,8.004-55.006-16.833-39
c-7.5,4.833-9.508-3.78-9.299-7.004c0.799-12.329,23.592-7.153,38.132-7.329c10.234-0.124,20.238-1.505,38.287-2.167
c16.642-0.61,32.903,1.125,46.213,1.5c12.438,0.351,35.058-5.579,31.863,6.451c-5.532,20.833,1.25,28.216-4.409,27.883
c-7.606-0.447-6.058-37.895-20.62-23.333c-10.167,10.166-15.972-0.747-25,12C119.547,443.568,121.798,416.515,111.547,415.233z
" />
</path>
<rect x="10" y="475.571" fill="#fefae9" width="180" height="4" />
</svg>
<div class="text">
<h1>happy birthday!</h1>
<p>Stella</p>
</div>
<script src='//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script><script src="./script.js"></script>
</body>
</html>
CSS :
This CSS styles a birthday cake animation with a candle and flickering flames on a dark background. The .candle is a white vertical rectangle positioned above the cake with subtle red stripes (:before and :after) for detail, animated to slide into view. The .fire elements create multiple overlapping flame shapes that animate with different speeds to simulate flickering by changing color, glow, size, and vertical movement. The fonts are light italic Lato for a soft text style, and the entire setup centers the cake with the candle rising smoothly from above.
@import url(https://fonts.googleapis.com/css?family=Lato:300italic);
html,
body {
width: 100%;
height: 100%;
}
body {
background: #252432;
}
#cake {
display: block;
position: relative;
margin: -10em auto 0 auto;
}
.candle {
background: #ffffff;
border-radius: 10px;
position: absolute;
top: 228px;
left: 50%;
margin-left: -2.4px;
margin-top: -8.33333333px;
width: 5px;
height: 35px;
transform: translateY(-300px);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-webkit-animation: in 500ms 6s ease-out forwards;
animation: in 500ms 6s ease-out forwards;
}
.candle:after,
.candle:before {
background: rgba(255, 0, 0, 0.4);
content: "";
position: absolute;
width: 100%;
height: 2.22222222px;
}
.candle:after {
top: 25%;
left: 0;
}
.candle:before {
top: 45%;
left: 0;
}
.fire {
border-radius: 100%;
position: absolute;
top: -20px;
left: 50%;
margin-left: -2.6px;
width: 6.66666667px;
height: 18px;
}
.fire:nth-child(1) {
-webkit-animation: fire 2s 6.5s infinite;
animation: fire 2s 6.5s infinite;
}
.fire:nth-child(2) {
-webkit-animation: fire 1.5s 6.5s infinite;
animation: fire 1.5s 6.5s infinite;
}
.fire:nth-child(3) {
-webkit-animation: fire 1s 6.5s infinite;
animation: fire 1s 6.5s infinite;
}
.fire:nth-child(4) {
-webkit-animation: fire 0.5s 6.5s infinite;
animation: fire 0.5s 6.5s infinite;
}
.fire:nth-child(5) {
-webkit-animation: fire 0.2s 6.5s infinite;
animation: fire 0.2s 6.5s infinite;
}
@-webkit-keyframes fire {
0%, 100% {
background: rgba(254, 248, 97, 0.5);
box-shadow: 0 0 40px 10px rgba(248, 233, 209, 0.2);
transform: translateY(0) scale(1);
}
50% {
background: rgba(255, 50, 0, 0.1);
box-shadow: 0 0 40px 20px rgba(248, 233, 209, 0.2);
transform: translateY(-20px) scale(0);
}
}
@keyframes fire {
0%, 100% {
background: rgba(254, 248, 97, 0.5);
box-shadow: 0 0 40px 10px rgba(248, 233, 209, 0.2);
transform: translateY(0) scale(1);
}
50% {
background: rgba(255, 50, 0, 0.1);
box-shadow: 0 0 40px 20px rgba(248, 233, 209, 0.2);
transform: translateY(-20px) scale(0);
}
}
@-webkit-keyframes in {
to {
transform: translateY(0);
}
}
@keyframes in {
to {
transform: translateY(0);
}
}
.text {
color: #d1d1d1;
font-family: "Lato", sans-serif;
font-weight: 300;
font-style: italic;
text-align: center;
}
.text h1 {
font-size: 1.4em;
}In conclusion, creating a Happy Birthday Cake Animation using HTML and CSS is a sweet and simple way to learn animations while making someone smile. With creative styling and smooth effects, you can turn basic code into a delightful digital birthday surprise! 🎂💖
If your project has problems, don’t worry. Just click to download the source code and face your coding challenges with excitement. Have fun coding!
